122111111985 has 32 divisors (see below), whose sum is σ = 199210917888. Its totient is φ = 63850026240.

The previous prime is 122111111953. The next prime is 122111111987. The reversal of 122111111985 is 589111111221.

It is not a de Polignac number, because 122111111985 - 2⁵ = 122111111953 is a prime.

It is a super-2 number, since 2×122111111985² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (122111111987) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1035600 + ... + 1147470.

It is an arithmetic number, because the mean of its divisors is an integer number (6225341184).

Almost surely, 2^122111111985 is an apocalyptic number.

122111111985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

122111111985 is a deficient number, since it is larger than the sum of its proper divisors (77099805903).

122111111985 is a wasteful number, since it uses less digits than its factorization.

122111111985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113305.

The product of its digits is 1440, while the sum is 33.

The spelling of 122111111985 in words is "one hundred twenty-two billion, one hundred eleven million, one hundred eleven thousand, nine hundred eighty-five".